West Brom have sacked chairman John Williams and chief executive Martin Goodman as owner Guochuan Lai responded to the club’s poor run of form.
The Baggies lost 3-0 at Chelsea on Monday and are bottom of the Premier League table with 11 games left.
A club statement said the changes “follow Albion’s poor results”.
Both Williams and Goodman “have been placed on garden leave with immediate effect”, with Mark Jenkins becoming the club’s new chief executive.
West Brom have been in English football’s top flight for eight successive seasons but have only picked up 20 points from 27 matches and are seven points behind 17th-placed Huddersfield Town.
West Bromwich Albion have signed left-back Keiran Gibbs from Premier League rivals Arsenal on a four-year contract, the club announced on Wednesday.
The 27-year-old, who has 10 caps for England, made more than 200 appearances for Arsenal over more than a decade at the north London club. No fee was disclosed, but British media reported that Gibbs cost between 5 million and 7 million pounds ($6.5 million-$9 million).
“I would like to thank (Arsenal manager) Arsene Wenger for giving me the chance to start my career and fulfill a dream!!” Gibbs said on Twitter.
“Now it’s time for the next chapter with West Bromwich Albion and I can’t wait to get started with the boys.”
Gibbs is West Brom’s sixth signing of the summer transfer window following the arrivals of Oliver Burke, Gareth Barry, Ahmed Hegazi and Jay Rodriguez. The club also signed China international striker Zhang Yuning who has been loaned to Werder Bremen.
“I’m delighted to welcome Kieran to the club. We have recruited another quality addition, an England player with bags of experience at Premier League and Champions League level,” West Brom chairman John Williams told the club website.